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CN V palsy (Diagnosis (History (DH
Meds, allergies, FH
Strokes, cancer,…
CN V palsy
Diagnosis
Examination
CN exam
Numbness in CN V dermatome
May have loss of corneal/jaw jerk reflex
Wasting of temporalis muscles
Investigations
Bloods
FBC, CRP, U+E, LFT, clotting,
glucose, lipids
Imaging
CT/MRI head (SOLs, ischemia)
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History
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SH
Living arrangements, occupation,
smoking, alcohol
PC/HPC
Numbness in face,
other symptoms
Pathophysiology
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Physiology
CV V comprises 3 branches (CN V1, V2, V3)
Each supply sensation to a third of the face
Also responsible for corneal reflex, jaw jerk
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Clinical
presentation
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Wasting temporalis muscles
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